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Mechanical Behaviour of Rocklike Material with an Open Flaw Under Triaxial Loading
https://orcid.org/http://orcid.org/0000-0002-2879-5875
https://orcid.org/http://orcid.org/0000-0002-6359-6767
https://orcid.org/http://orcid.org/0000-0002-6706-3626
The study of flaw effect on the strength and failure of rock mass is important to predict the unstable failure in the rock mass. A series of conventional triaxial compression tests were conducted on the rocklike specimens to study the cracking behaviour. The triaxial compressive strength was investigated by increasing the confining pressure from 25 to 75 kg/cm2 and five angles of the flaw from 0 to 90°. The cracking pattern under triaxial compression was explored. An open flaw penetrating through the depth of the prismatic specimens of size 100 mm × 45 mm × 45 mm was prepared using a mould. Metal strips were inserted in the prefabricated groove in the mould before casting and removed after a fixed time to obtain the specimens with an open flaw. A pumping unit is used to apply confining pressure for the triaxial tests. A data acquisition system attached to the data logger was used to record the vertical load and deformation of flawed specimens. The experimental results provide an understanding of the triaxial compressive strength and failure characteristics of rocklike specimens with an open flaw. The results revealed that the strength of flawed specimens increases with the increase in the confining stress for a constant angle of inclination of the flaw. It was also found that the flawed specimens mainly failed due to the development of anti-tensile wing and secondary shear cracks in triaxial compression.
Mechanical Behaviour of Rocklike Material with an Open Flaw Under Triaxial Loading
https://orcid.org/http://orcid.org/0000-0002-2879-5875
https://orcid.org/http://orcid.org/0000-0002-6359-6767
https://orcid.org/http://orcid.org/0000-0002-6706-3626
The study of flaw effect on the strength and failure of rock mass is important to predict the unstable failure in the rock mass. A series of conventional triaxial compression tests were conducted on the rocklike specimens to study the cracking behaviour. The triaxial compressive strength was investigated by increasing the confining pressure from 25 to 75 kg/cm2 and five angles of the flaw from 0 to 90°. The cracking pattern under triaxial compression was explored. An open flaw penetrating through the depth of the prismatic specimens of size 100 mm × 45 mm × 45 mm was prepared using a mould. Metal strips were inserted in the prefabricated groove in the mould before casting and removed after a fixed time to obtain the specimens with an open flaw. A pumping unit is used to apply confining pressure for the triaxial tests. A data acquisition system attached to the data logger was used to record the vertical load and deformation of flawed specimens. The experimental results provide an understanding of the triaxial compressive strength and failure characteristics of rocklike specimens with an open flaw. The results revealed that the strength of flawed specimens increases with the increase in the confining stress for a constant angle of inclination of the flaw. It was also found that the flawed specimens mainly failed due to the development of anti-tensile wing and secondary shear cracks in triaxial compression.
Mechanical Behaviour of Rocklike Material with an Open Flaw Under Triaxial Loading
https://orcid.org/http://orcid.org/0000-0002-2879-5875
https://orcid.org/http://orcid.org/0000-0002-6359-6767
https://orcid.org/http://orcid.org/0000-0002-6706-3626
The study of flaw effect on the strength and failure of rock mass is important to predict the unstable failure in the rock mass. A series of conventional triaxial compression tests were conducted on the rocklike specimens to study the cracking behaviour. The triaxial compressive strength was investigated by increasing the confining pressure from 25 to 75 kg/cm2 and five angles of the flaw from 0 to 90°. The cracking pattern under triaxial compression was explored. An open flaw penetrating through the depth of the prismatic specimens of size 100 mm × 45 mm × 45 mm was prepared using a mould. Metal strips were inserted in the prefabricated groove in the mould before casting and removed after a fixed time to obtain the specimens with an open flaw. A pumping unit is used to apply confining pressure for the triaxial tests. A data acquisition system attached to the data logger was used to record the vertical load and deformation of flawed specimens. The experimental results provide an understanding of the triaxial compressive strength and failure characteristics of rocklike specimens with an open flaw. The results revealed that the strength of flawed specimens increases with the increase in the confining stress for a constant angle of inclination of the flaw. It was also found that the flawed specimens mainly failed due to the development of anti-tensile wing and secondary shear cracks in triaxial compression.
Mechanical Behaviour of Rocklike Material with an Open Flaw Under Triaxial Loading
Lecture Notes in Civil Engineering
Jose, Babu T. (editor) / Sahoo, Dipak Kumar (editor) / Oommen, Thomas (editor) / Muthukkumaran, Kasinathan (editor) / Chandrakaran, S. (editor) / Santhosh Kumar, T. G. (editor) / Kumar, Prabhakar (author) / Samadhiya, Narendra Kumar (author) / Sahoo, Jagdish Prasad (author)
Indian Geotechnical Conference ; 2022 ; Kochi, India
Proceedings of the Indian Geotechnical Conference 2022 Volume 5 ; Chapter: 14 ; 163-171
2024-07-20
9 pages
Article/Chapter (Book)
Electronic Resource
English
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